Media Player and MP4's

The windows media player only plays some files. I can't figure out why some are available and others are not. Its weird. Some mp4's work some don't. Same thing with avi. Mkv's don't work at all.

I can stream mp4's and mkv's on the media player.

1. try renaming the files. sometimes when they're too long they don't show up or won't show up until i rename them.

2. try with wifi instead of hard wired

3. you have to go into network and sharing settings and give the xbox one pemission to to view your pc media library.

4. try different files. go on youtube and download an mp4 and put it on your usb stick and try it.

Having the same problem with media player on my Xbox One S playing .mp4 files off of a 2TB drive, exactly as described by "NeutronOverload".

I switched over to ACG player for now which is only ok-ish. The ads are slightly annoying, popping up only once during binge play, but playback is better than VLC, (the contrast issue)

I hope an update fixes this issue with media player soon.

Except the "Media Player" app is almost totally useless, plays nearly everything including DVD's in 4:3 (16:9 @ 4:3/ 4:3 in something unwatchable). The ONLY format I have that plays correctly is MP4's.

I am kicking myself for not getting a PS4 !

Yes and no. It depends on how it's encoded. Usually if it's encoded with DTS and a MP4 it will work. From my personal experience it's a bit picky with 4k resolutions. Check

this link on the official media formats.